Non-neoplastic conditions
Massive localized lymphoedema
Massive localized lymphoedema
Lobules of mature adipose tissue
Expanded interlobular septa
Spindle-stellate cells with mild atypia and prominent myxoid background
Ectatic lymphatic spaces
FISH: MDM2 non-amplified
Typically occurs in context of morbid obesity (PMID: 9777990)
Perinephric myxoid pseudotumour of fat
Perinephric myxoid pseudotumour of fat
Sheets of mature adipocytes
Spindle-stellate cells in myxoid stroma
Mild chronic inflammatory infiltrate
FISH: MDM2 non-amplified
May arise in context of renal cell disease (neoplastic and non-neoplastic) and transplantation (PMID: 19525929, 30826321, 33835530)